Go! obedient to my call,
Turn to profit thy young days,
Wiser make betimes thy breast
In Fate's balance as it sways,
Seldom is the cock at rest;
Thou must either mount, or fall,
Thou must either rule and win,
Or submissively give in,
Triumph, or else yield to clamour:
Be the anvil or the hammer.
Johann Wolfgang von Goethe
http://www.poemhunter.com/poem/another-2/